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Dairy Cattle And Reproduction

Subjects : industries, dairy
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Failure to have both testis (gonads) descend






2. S-shaped inside body - relaxes to be exposed for breeding. Disadvantges: muscles weaken with age - cannot always hold it in - exposed to harsh outside conditions or stepped on.

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3. 265-285 days






4. Scar tissue plugs up chambers of udder






5. BST given to dairy cattle makes the mammary gland more persistent - helps produce more milk. good as Long-term because it does not cause cow to bulk up - provides more milk/cow Which means less cows needed - less cows need to be given feed - lower co






6. 1. reproduction - 2. mastitis/udder problems - 3. low milk production - 4. soundness/poor feet and legs (living on concrete)






7. (FSH) helps to regulate puberty - needed every day - stimulates the sertoli cells to produce nutrients for the sperm






8. Contains and regulates the temp of the testes for sperm production






9. Gonadotropic (GnRH) is (FSH and LH). Follical Stimulating (FSH) and Lutinizing Hormone (LH).






10. Small tubes located at the upper ends of the uterine horns. connects uterine horn to infundibulum. passageway of the egg.






11. Cycle that lasts weeks (ovulation->hormone cycles->ovulation)






12. 336 days






13. Animals which have only one estrous cycle (ex: dog - fox)






14. Constitute 50-90% of the volume of the ejaculate. (3 glands total: seminal vesicles - prostate gland - cowper's gland)






15. 10-37 (21) days






16. Duct which connects epididymis to urethra of the penis. transports sperm at ejaculation. cut to sterilize male.






17. What helps regulate spermatogenesis?






18. Look for infection - split - and rupture of the penis






19. 147 days






20. (male) definition: duct located outside of the testes. 3 parts: head - body - tail. 4 Functions:concentrate sperm - store sperm - transport sperm - site of sperm maturation. entire process takes ~40-60 days






21. Implies the amount of estrogen production






22. Serves as a bone cradle for the reproductive system. used greatly in palpation as a 'landmark'.






23. 30 hours after estrus begins






24. When are steers and heifers weaned from bottle feeding?






25. Why Dairy calves are fed powdered milk.






26. Supply nutrients for the sperm following ejaculation and deposition into the female reproductive tract






27. What makes the milk flow through the mammary glands?






28. 45-60 days after breeding; re-breed as required






29. Organ of copulation - provides passageway for semen and urine - muscular organ characterized especially by its spongy - erectile tissue that fills with blood






30. Milk made by mother which includes antibodies for the calf. MUST be given to the calf within the first 24 hrs of life. also provides calf with energy stores. effectiveness lasts from 4-8 months of age.






31. % of fat in milk. makes cheeses and ice cream. regulates cost of milk






32. Produce testosterone. located between the seminiferous tubules






33. Located directly in front of the cervix. fertilized egg implants here. connected to two uterine horns. implantation occurs on the same side as ovulation occurred.






34. 1-3 days






35. (switzerland) 2nd in size and milk production - most muscle -






36. 2 month growth cycle. stored in the epididymis of the bull






37. ~305 days (altough often longer due to breeding difficulties)






38. Why does estrus happen before ovulation?






39. Failure to have one testis (gonad) to descend






40. Superior genes are _______ to multiply






41. Can survive ~7 days in cow. vast majority <48 hours






42. 147 days






43. S-shaped inside body - relaxes to be exposed for breeding. Disadvantges: muscles weaken with age - cannot always hold it in - exposed to harsh outside conditions or stepped on.

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44. ~60 days before calving






45. When are dairy cattle dehorned?






46. 14-19 (17) days






47. Male on one pin and female on other side






48. Reproduction. more offspring leads to more feed costs - but is offset by reproduction numbers






49. Castration tool which clamps down on the vans deferens. causes the sperm to not reach the penis to be ejaculated






50. Animals which have many estrous periods per year (ex: cow - sow)







Sorry!:) No result found.

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